ci: Add groupId and version to bigquery benchmark module (#12119)

Error:
```
XPath set is empty
XPath set is empty
Checking :benchmark::Couldn't parse the pom file: ./java-bigquery/benchmark/pom.xml
```

From #12081

Benchmark is not added to the bigquery modules and should not be
published to Maven Central. The check just finds all the pom.xml files
in the repo and tries to ensure that they don't exist in Maven.

Author: lqiu96

java-bigquery/benchmark/pom.xml

@@ -2,7 +2,9 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
+  <groupId>com.google.cloud</groupId>
   <artifactId>benchmark</artifactId>
+  <version>2.62.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-bigquery:current} -->
   <parent>
     <artifactId>google-cloud-bigquery-parent</artifactId>
     <groupId>com.google.cloud</groupId>